Purging pump for plumbing systems



FIG. 1 is a front elevation of a purging pump for plumbing systems showing my new design, the rear elevation being substantially identical;

FIG. 2 is a side elevation thereof, the opposite side being substantially identical;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation thereof showing the nozzle in an alternate position, the rear elevation being substantially identical;

FIG. 6 is a side elevation of FIG. 5, the opposite side being substantially identical;

FIG. 7 is a top plan view of FIG. 5; and

FIG. 8 is a bottom plan view of FIG. 5. 

The ornamental design for a purging pump for plumbing systems, as shown and described. 